You need to ensure that your callback route is defined and available in your production environment. It would also be worth checking the Logs in Auth0 to see if any other errors were thrown.
Is the callback route any different in the production environment other than replacing localhost with example.com?
Also, the logs looks to be “Success login”, so it might not be a problem with the auth, but with my app.
My response was aimed at your application - you need to make sure that your callback route is working in your application, in your production environment.